A WordPress performance framework. Improve site performance via caching.
Websites using some form of Captcha technology on them.
AddThis, the new brand name for Clearspring Technologies, is the leader in socially connecting publishers, services and advertisers to audiences on the open web. Reaching more than 1.3 billion unique users monthly, AddThis’ social tools and analytics are used on more than 14 million unique domains to distribute and track digital...
Let visitors recommend your content on Google Search and share it on Google+.
Google+ platform websites integration using the Google+ platform tag.
CloudFlare is a global CDN and DNS provider that can speed up and protect any site online.
nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Really Simple Discovery is a way to help client software find the services needed to read, edit, or "work with" weblogging software.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.
Indicates that the site provides an interface specifically for searching the document and its related resources.
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".
This page contains a meta robots tag which tells search engines and robots to index or not index the page.